Multisystem afflictions in former National Football League players - Morris, Timothy P (Beth Israel Deaconess Medical Center and Harvard Medical School) ; McCracken, C. (Harvard Medical School) ; Baggish, Aaron (Harvard Medical School) ; Weisskopf, M. (Harvard TH Chan School of Public Health) ; Zafonte, Ross. (Spaulding Rehabilitation Hospital) ; Taylor, H. A. (Morehouse School of Medicine) ; Nadler, L. M. (Harvard Medical School) ; Speizer, F. E. (Brigham and Women's Hospital (Boston, Estats Units d'Amèrica)) ; Pascual Leone, Álvaro (Institut Germans Trias i Pujol. Institut Guttmann) ; Universitat Autònoma de Barcelona